Consolidated Statements of Operations - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Statement [Abstract]
Net sales	$ 1,492.9	$ 1,277.0	$ 1,152.1
Cost of sales	1,282.4	1,099.1	986.8
Selling, general and administrative expenses	162.2	155.9	140.2
Restructuring and other special charges	17.3	20.4	6.6
Gains on sales of assets, net	(2.4)	(14.7)	0.0
Operating income	33.4	16.3	18.5
Other components of pension income and other postretirement benefits expense, net	11.1	9.7	7.3
Interest expense, net	(33.8)	(27.1)	(27.6)
Income (loss) from continuing operations before income taxes	10.7	(1.1)	(1.8)
Income tax benefit	0.7	1.0	1.3
Income (loss) from continuing operations	11.4	(0.1)	(0.5)
(Income) loss attributable to noncontrolling interest	(1.3)	1.2	0.3
Income (loss) from continuing operations attributable to ParkOhio common shareholders	10.1	1.1	(0.2)
Loss from discontinued operations, net of tax	(24.3)	(25.9)	(4.3)
Net loss attributable to ParkOhio common shareholders	$ (14.2)	$ (24.8)	$ (4.5)
Basic:
Continuing operations (in dollars per share)	$ 0.83	$ 0.09	$ (0.02)
Discontinued Operations (in dollars per share)	(2.00)	(2.16)	(0.35)
Total (in dollars per share)	(1.17)	(2.07)	(0.37)
Diluted:
Continuing operations (in dollars per share)	0.83	0.09	(0.02)
Discontinued Operations (in dollars per share)	(1.99)	(2.11)	(0.35)
Total (in dollars per share)	$ (1.16)	$ (2.02)	$ (0.37)
Weighted-average shares used to compute earnings (loss) per share:
Basic (in shares)	12,091,712	12,007,000	12,061,419
Diluted (in shares)	12,192,949	12,269,143	12,061,419